meyer



(No Model.)

F. MBYERJ. S. KIEHL 8u A. GRANT.

d5 sheets-4111@e1 1 1101111311 ENGINE. v

www Q a (im LJ 1 1 111 Patented-Peb. 21, 18113.V

IM ll 45 sheets-sheet 2.

P. MEYER, J.` S. KIEHL 85A. GRANT. ROTARY ENGINE.

(No Model.)

5 Sheets-,Sheet 3. I'. MEYER, J'. S. KIEHL'ZSU A. GRANT.

[mism .Patented Peb. 21, 1893.

lzlllllll WWW. mm@ )www W\W/ Y* RUTARYENGINB.

(No Model.)

(No Mom.) 5 sneetsfsheet 4.

F. MEYER, J. S. KIEHL 8v A. GRANT.

ROTARY ENGINE.

No. 492,360. Patented Feb. 21, 1893;

5 Sheets-Sheet 5. MEYER, J." S. KIEHL 8v A. GRANT.

RGTARY ENGINE.

Patented Peb. Z1, 1893.

(No Model.)

No. l492,360

NNN.

ilNiTED STATES PATENT OETTCE.

FREDERICK MEYER, JOSEPH S. KIEHL, ANI) ALEXANDER GRANT, OF CHICAGO,

ILLINOIS, ASSIGNORS TO THE DUPLEX ROTARY ENGINE COMPANY, OF SAME PLACE.

ROTARY ramener-1.V

SPECIFICATION forming part of Letters Patent No. 492,360, dated February21 1893.

Application filed November 29, 1889. Renewed March 16, 1891. Serial No.385.166. (No model.) l

`.To a/Z whom t may concern: ary block or abutment of the engine. Fig.

Be it known that we, FREDERICK MEYER, 7 is a transverse section ofthesaid stationary J osEPn S. KIEHL, and ALEXANDER GRANT, block in the line7-7 of Fig. 6, showing the of Chicago, in the county of Cook and Statesteam packing devices employed in connec- 5 of Illinois, have inventedcertain new and tion therewith. Fig. 7a isa plan view of one 55 usefulImprovements in Rotary Engines; and of the outer or inner cross plateswhich form we do hereby declare that the following is a part of thepacking devices applied to the full, clear, and exact descriptionthereof, refstationary block shown in Fig. 6. Fig. 8 isa erence beinghad to the accompanying drawfragmentary section of the central revolvingIO ings, and to the letters of reference marked -disk on the line 8 8 ofFig. l. Fig. 9 is a 6o thereon, which form a part of thisspecilicadetached view of a section or part of the antion. nular packingring applied to each innertlange This invention relates to improvementsin of the revolving disk. Fig. 10 is a detached rotary steam engines andmore especially to View of a section of the annular packing ring I5improvements upon the construction in such applied to each outer flangeof thev revolving 6 5` engines set forth in our application for Letdisk.Fig. 1l is an enlarged fragmentary, inters Patent of the United StatesSerial No.` terior view of the engine, showing one ofthe 306,229, filedApril 6, 1889, and allowed June radially sliding pistons, viewededgewise, with 7, 1889. its attachments, andadjacent parts of the en- 2oThe principal featureof improvement here-` gine. Fig. 12 is a section onthe line 12-12 7c in pointed out consists in the duplex form of of Fig.1l. Fig. 13 is a detail section in the the engine, the duplicated partsbeing ar- 4plane of the line 13-13 of Fig. 1 2. Fig. 14 ranged onopposite sides of a central revolv- Vis a detail section on the line14E-14 of Fig. ing disk which is fixed .to the power trans- 2 and ofFig. 1l. Fig. l5' is a perspective a 5 mitting shaft and which issubject to an eftiview of one half of the revolving flanged disk 7 5cient steam pressure on both sides thereof stripped of its accessories.Fig. 16 is a perso that end pressure upon the said shaft .spective viewof one of the sliding pistonsdeis obviated wholly or in part and. thefrictached. Fig. 17 is adetached View yof one of tion incident to suchpressure is avoided orI the sliding pistons having a shoe pivoted 3olessened. thereon, which shoe runs in the eccentric cir- 8o The natureof rour improvements will be cular groove of the cam by whichthe pistonsunderstood from the accompanying drawings are actuated. Fig. 18 is anelevation showwhich show the duplex form of the engine toing the innerand eccentrically grooved face gether with several other features ofimproveof the cam by which the pistons are actuated,

35 ment that will be hereinafter referred to. a shoe of one of thepistons being shown in B5 Figure 1 is a vertical section in the plane ofthe eccentric groove and dotted lines indicatthe axis of the engineshaft. Fig. 2 is a vertiing the outer concentric portion of this cam calsection transverse to the shaft, in the indiplate which, in theconstruct-ion shown in secrect line 2-2 of Fig. 1. Fig. 3 is asection in-tion in Figs. l and 3, passes through the side 4o the plane of the axisof the shaft and on the plates of the engine. Fig. 19 is a detail re- 9oline 3 3 of Fig. 2. Fig. 3f is a vertical seclating to the packing. tiontransverse to the shaft in the line Ein-3a The arrows applied to theseveral section of Fig. 1 but showing only the simple elelines indicatethe direction in which the sevments of the engine without adjunctivedeeral sections taken on said lines are viewed.

45 tails. Fig. t is a horizontal section of the A represents a shaftwhich is to be driven 95 valve mechanism on the line L -4. of Fig. 2. bythe engine. Fig. 5 is a fragmentary section on the line B B are paralleldisks or side plates form- .5-5 of Fig. et, cutting one of the sideplates ing the lateral walls of the inclosure which of the engine andshowing the parts therein. contains the rotating parts of the engine, C

5o Fig. 6 is a detached side view of the station- C being the annular orperipheral plate which rco is placed between the sideplates B B andsurrounds the revolving parts of the engine.

D is a circular disk having annular flanges D and D2, and keyed orotherwise fastened to the shaft A between the side plates B B. This diskis seen detached in Fig. l5.

E E are two segmental blocks secured to the side plates and reachinginwardinto contact with the disk D in the spaces d d between the annularflanges of said disk, which spaces form the steam chambers of theengine.

D D are the annular and cylindrical flanges at the margin of the disk Dand running outside of the fixed blocks E, and D2D2 are similar annularand cylindric flanges of the disk D, concentric with the flanges D andrevolving inside the fixed blocks E E.

F F are radially sliding pistons arranged to slide through transverseslots (l, in the inner flanges D2 so as, in certain parts of theirrevolution, to extend across the space d between the flanges D and D2and at other points of their revolution to be retracted inwardly out ofsaid space in order that they may pass the fixed blocks E E.

B B are fixed cams, here shown as forming part of the side plates B andprovided with circular grooves b eccentric to the shaft A and engagedwith the pistons F F for produciug the radial sliding movements of saidpistons.

F F are curved shoes fitted to the grooves b and pivoted upon journalsfon the inner ends of the pistons F F.

G is a valve chest through the valve seat of which lead the ports g gand g2, the ports g and g being branched to connect with both theannular spaces d d (between the flanges D and D2) at opposite ends ofthe fixed blocks E E, one at one end and the other at the other end ofsaid block, and the port g2 (leading from the valve chest between theports g g) communicating with the exhaust pipe H. The steam chestreceives steam through the port g3 which connects with the inlet pipe I.It willl be observed that the spaces d are separate chambers, not incommunication with each other, and have independent inlet and exhaustpassages, by means of which each side of the engine has a separate andefficient steam supply and exhaust.

G is a sliding D-valve arranged within the valve chest and adapted toopen either of the ports g g for the admission of steam to the enginewhile giving communication (through the recess g4 of the valve) betweenthe other of said ports and the exhaust port g2. The valve chest G, whenasingle one is employed, is desirably placed on the periphery. of theengine and the bifurcations of the ports g g are prolonged in the sideplates B B, as indicated by dotted lines in Figs. 2 and 4 and by thesectional Fig. 5.

J is a hand lever for moving the valve G said lever being pivoted to therodj ofthe valve G and fulcrumed in any suitable manner, as for example,by the link j which connects its lower end with the casting of the valvechest.

The pistons F F are of such number that at least'one of them on eachside of the disk D will always be extended across the space d in thelower or longer arc between the inner ends of the ports g g and thesteam will inanifestly act upon this piston to cause the rotation of thedisk D and the shaft A, since the block E forms a fixed abutmentpreventing movement or escape of steam in the opposite direction. In thedrawings four pistons F are shown in each side of the engine. Inconnection with the circular form-of the cam groove b a slot or recessd2 is formed in the inner surface of the outer cylindric flange D forthe admission of the end of each of said pistons. It is to accommodatethe slots d2 of suitable depth that the said outer ange D is made of thethickness indicated. The protrusion of the outer ends of the pistons Finto the recess d2 is obviously a necessity in the use of circular camgrooves b for the actuation of said pistons where the shaft and disk areconcentric with the shell or casing while the circular cam groove iseccentric with relation to the said shaft, disk and shell, as in theconstruction which we have devised. But the circular form of' saidgrooves is desirabe for two other reasons; rst, to give an easier motionto the pistons and, second, to permit the use of the shoes F', pivotedto the pistons and fitted to the grooves. These shoes obviously requirethe grooves b to be circular.

The number of the pistons may be varied and a valve of other form thanthat shown may manifestly be employed without departure from ourinvention.

Any suitable packing devices may, for the general purposes of ourinvention, be employed to give tight joints between moving surfaces. Wehave, however, devised certain forms of metal packings which we havefound efficient and durable and they are herein illustrated and nextdescribed. First describing the packing applied to the free edges of theflanges D and D2 of the disk D, to run in contact with the side plates BB, K K are parts of metal rings sectionally in the angular form seen inFig. 3 and applied to the inner edge of the outer flange D and to theouter edge of' the inner flange D2 so that they run in contact with thefixed block E as well as in contact with the adjacent side plate B.Behind these segmental packing rings are placed springs k of anysuitable form arranged to throw them outward toward the side plates B.To cut off passage of steam between the inner edges of these angularpacking rings and the body of the flange to which they are applied andpast the stationary abutment or block E, small xed blocks K (Fig. 19)may be set across this passage flush with the surface of the flange.These IOO segmental packing rings extend on the flange D from one slotcl2 to the next one and on the flange D2 from one slot CZ to the next,as indicated in Fig. 2. The diskD has radial grooves d2 in which theinner edges of the pistons are fitted to slide. In the bottoms of thesegrooves are placed metal packing strips K2 bearing againstthe edges ofthe pistons. In the sides of the slot d of the inner flange D2 areplaced the metal packing strips K3 (Figs. 1l and 13) backed by springslc', as shown in Fig. 13. The fixed blocks or abutments E havetransverse packing bars such as are shown in Figs. 6, 7 and 72. That isto say, on the edge of the said fixed blocks which runs in contact withthe bottom of the groove d between the flanges D and D2 is a T-shapedblock K4, forced outward by springs, indicated at 71:2 of Fig. 7, and onthe outer and inner surfaces of said fixed blocks are placed plates K5notched at one of their ends to overlap the arms of the T-shaped blockK4 and backed by springs k2 which force them outagainst the flanges DD2.

Other forms of packing devices may be employed without departure fromour invention.

As a matterof convenience in construction the cams B are made separatefromthe side plates B and have the concentric portions b which fitopenings in the side platesB around the shaft, the cam portion b2 beingof greater diameter and standing inside the plane of the inner surfaceof said side plates. The parts B are secured from rotation in the partsB by means of screws Z13 let into holes drilled at the meeting edges ofthe parts B B.

B2 B2 are Vexternal plates surrounding the shaft and screwed to the sideplates B, as

shown clearly in Fig. l, forming the outer walls of stuffing boxes ofwhich B2 are the glands. A

Various modifications can be made in the details of construction abovedescribed and we therefore do not limit ourselves to the particular formof details shown.

Obviously a separate valve may be provided for the admission anddischarge of steam to and from each side of the engine, and steamadmitted to one side may be under a different pressure from thatadmitted to the other. It follows that one side of the en` gine may beconnected to take the exhaust steam from the other side, and thus theengine, as a whole, become a compound engine. Of course this wouldrequire the proper enlargement of one compartment to a greater size thanthe other. It is also obvious that some features of improvement hereindescribed, as for example, the circular eccentric groove b incombination with the pistons pro-A vided with pivoted shoes fitted tosaid groove, may be employed in the single form of our engine shown inour former application as well as in the duplex form herein illustrated.

IVe claim as our invention Y 1. The duplex rotaryengine described,consisting essentially of a stationary shell supporting fixed blocksfrom its opposite sides and also supporting interior cams, an axial,rotatable shaft, a disk mounted on said shaft, k peripherally andlaterally inclosed within the shell, and provided with separate,circular steam chambers, having independent inlet and exhaust ports andcontaining the xed blocks, and sliding pistons operated by the cams,whereby said pistons are retracted to 75 pass the fixed blocks and areadvanced after passing the same, substantially as described.

2. The combination, with a stationary shell and a revoluble shaftconcentric with said shell, of a circular disk concentrically mounted onsaid shaft within the shell and provided with concentric flanges, withan intermediate annular steam groove, and with radial piston slotsextending into the outer flange, a stationary abutment supported by oneside of the shell between the flanges of the disk, a fixed cam providedwith an eccentric circular groove, and radially sliding pistons engagingsaid eccentric circular groove and adapted to be projected across thesteam groove into the piston slots in the outer flange of the disk allconstructed and arranged substantially as described, and shown.

3. The combination, with a stationary shell and revoluble shaftconcentric with said shell, 95 of a circular disk mounted on said shaftwithin the shell and provided with concentric flanges, with anintermediate annular steam groove, and with radial piston slotsextending into the outer flange, a stationary abutment supported by oneside of the shell between the flange of the disk, a fixed cam providedwith an eccentric circular groove, and radially sliding pistons, adaptedto be projected across the steam groove into the piston slots in theouter flange of the disk, and having pivoted shoes of an equal widththroughout their length, said width being equal to the width of thegroove, and having a curvature corresponding with that of the groove, soas to ll and fit the same all constructed and arranged substantially as`described and shown.

In testimony that we claim the foregoing as our invention We affix oursignatures in presence of two witnesses.

FREDERICK MEYER. JOSEPH S. KIEI-IL. ALEXANDER GRANT.

Witnesses: M. E. DAYTON, P. H. T. MASON.

